		*{
			margin: 0;
			padding: 0;
			border: 0;
		}
		html{
			height: 100%;
		}
		#box{
			height: 100%;
			padding-left: 3%;
			padding-top: 50px;
			background-repeat: repeat-y;
		}
		textarea{
			height: 100%;
			width: 95%;
			outline: none;
			background: none;
			font-family: "微软雅黑";
			font-size: 1em;
			line-height: 1.5em;
			letter-spacing:0.1em;
			overflow-y: scroll;
			resize: none;
		}